In addition Groom et al did look for antibodies - they found nothing specific.

House suggests they get a medical history by checking his blood for antibodies.

He said it took that long for antibodies to the virus to surface.

It costs about $85 to test a woman's blood for antibodies.

Blood tests are available that test for antibodies against the organism.

The blood would be tested for antibodies and compared with other samples.

In such cases, tests for antibodies will be consistently negative.

Patients who tested positive for antibodies were able to "benefit from early treatment".

Over a 12 month period, 30 patients tested positive for antibodies.

Even the special testing they do for antibodies is normal.